Slebodziński A B, Nowak G, Zamysłowska H
Endocrinol Exp. 1980 Mar;14(1):73-6.
The rapid increase in serum thyroxine (T4), triiodothyronine (T3) and reverse triiodothyronine (rT3) in the pig shortly birth presumably due to enhanced secretory activity of the thyroid gland was observed. During the 2nd and 3rd week of live T3 and T4 remained essentially unchanged but rT3 continued to rise to a high plateau level. This resulted in an increase in rT3/T4 ratio to about two and rT3/T3 raio to about one. A shift to rT3 production seems to be a reflection of an increased capacity of 5-iodothyronine deiodinase with age.
观察到，猪出生后血清甲状腺素（T4）、三碘甲状腺原氨酸（T3）和反三碘甲状腺原氨酸（rT3）迅速增加，这可能是由于甲状腺分泌活动增强所致。在出生后的第2周和第3周，T3和T4基本保持不变，但rT3继续上升至较高的平台水平。这导致rT3/T4比值增加到约2，rT3/T3比值增加到约1。向rT3生成的转变似乎反映了5-碘甲状腺原氨酸脱碘酶的能力随年龄增长而增强。
